I got two hard drives in my PowerMac G4 (AGP), the Master drive is 10GB and the slave drive is 30GB. Now I am thinking about to switch this two drive so the 30GB one will be the Master drive and the 10GB drive will use as a slave. However, I don't know how to do with that because I am not sure that if I need to re-set the jumper in the 30GB to master ( I made the jumper as slave when I installed this drive) or leave it as what I set? The other question is how can I install the OS into the 30GB and when should I do that? How and when can I set the 30GB drive as the boot up drive? Is there any instruction that I can follow to do setp by step? Thanks in advance.